Rectifying tower for separating and purifying ethyl hexanoate

Abstract

The invention discloses a rectifying tower for separating and purifying ethyl hexanoate. The rectifying tower includes a rectifying tower barrel (1), an internally arranged inner part, a sealing head (13), a support (7) and a skirt (10), the rectifying section of the rectifying tower adopts double overflow tray assignment, stripping section of the packing, the stripping section of the rectifying tower adopts a filler, and the bottoms of the rectifying section and the stripping section are provided with a first cyclone separator (8) and a second cyclone separator (9) respectively, a liquid distributor (4) is arranged below a refluxing hole and above the trays, a liquid sealing disk (16) is arranged between the trays and the first cyclone separator (8) at the bottom of the rectifying section, and the stripping section barrel is provided with a lateral line export (15). The rectifying section adopts the trays, and the stripping section adopts the metal corrugated structured filler, so a good separation effect is achieved, and the processing ability is strong; and the rectifying section adopts the trays, so the blocking of the filler by ester in the separation process is prevented, the tray efficiency is stable, the trays are convenient to clean, the liquid holdup is large, and the gas-liquid contact time is long.

Description

technical field [0001] The invention relates to the field of chemical tower equipment, in particular to a rectification tower for separating and purifying ethyl hexanoate. Background technique [0002] At present, most of the traditional preparation methods of ethyl caproate are obtained by esterifying caproic acid and ethanol under the action of a catalyst, and the crude product is a mixture of ester, alcohol, acid and water, so the purification of the crude product is very important. The most used in the industry is the first-stage rectification tower, and the inner part adopts a plate tower, or a packed tower is used for a small-capacity factory. The plate efficiency of this kind of rectification column that only adopts plate tower or packed tower is low, and support beams and support rings are needed to support the dead weight of the tray or packing, so that the entire tower section cannot be fully used for production, so the production capacity is small , and the opera...

AI Technical Summary

Problems solved by technology

The plate efficiency of this kind of rectification tower using only plate tower or packing tower is low, and support beams and support rings are needed to support the dead weight of the tray or packing, so that the entire tower section cannot be fully used for production, so the production capacity is small , and the operating flexibility is also small

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